Cdma Communication System and Method

1. A communication method in a communication system for communication between a base station and a terminal station, comprising the steps of: transmitting, from the terminal station, a first signal; performing, in the base station, a timing acquisition of the first signal from the terminal station and transmitting first difference information for first adjustment which indicates a phase difference between the first signal and a reference phase; inputting, in the terminal station, the first difference information to a generating circuit for generating an orthogonal signal; generating, in the generator circuit of the terminal station, the orthogonal signal having a phase set according to the first difference information and transmitting a second signal using the generated orthogonal signal; performing, in the base station, a tracking of the second signal from the terminal station and transmitting a second difference information for second adjustment between the second signal and the reference phase, the second adjustment being finer than the first adjustment; and inputting, in the terminal station, the second difference information to a delay circuit between an antenna of the terminal station and the generating circuit; and setting, in the terminal station, a delay amount of the delay circuit according to the second difference information.

2. A terminal station that communicates with a base station, comprising: an antenna that transmits a first signal to the base station, transmits a second signal to the base station and receives, from the base station, first difference information indicating a phase difference for first adjustment between the first signal and a reference phase to be used in a timing acquisition of the first signal, said antenna further receiving, from the base station, second difference information indicating a difference for second adjustment during tracking between the reference phase and the second signal, the second adjustment being for finer adjustment than the first adjustment; a generator which generates an orthogonal signal including a phase set according to the first difference information inputted from the antenna, and being assigned to the terminal station and used for transmitting the second signal; and a delay circuit, between an antenna and the generator, having a delay set according to the second difference information inputted from the antenna.

3. The terminal station of claim 2 , wherein the generator is adapted to slide a phase of the orthogonal signal by a predetermined amount until receiving the first difference information transmitted via the antenna from the base station, and wherein the first difference information indicates a completion of timing acquisition of the transmitting signal from the terminal station.

4. The terminal station of claim 3 , wherein the transmitting data are fixed as consecutive symbols before the completion of the timing acquisition.

5. The terminal station of claim 4 , further comprising a transmission phase controller, wherein the second difference information is input to the delay circuit via the transmission phase controller.

6. The terminal station of claim 3 , further comprising a transmission phase controller, wherein the second difference information is input to the delay circuit via the transmission phase controller.

7. The terminal station of claim 2 , further comprising a transmission phase controller, wherein the second difference information is input to the delay circuit via the transmission phase controller.